Home / 15,093.48-20,830.32-8,380.40

Finding the Fourth Proportional to 15,093.48, 20,830.32 and 8,380.40

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Solution

The fourth proportional to 15,093.48, 20,830.32 and 8,380.40 is: 11,565.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,093.48 : 20,830.32 = 8,380.40 : x
  2. Step 2: Convert to fraction form
    15,093.48/20,830.32 = 8,380.40/x
  3. Step 3: Cross multiply
    15,093.48x = 20,830.32 × 8,380.40
  4. Step 4: Simplify right side
    15,093.48x = 174,566,371.83
  5. Step 5: Solve for x
    x = 174,566,371.83/15,093.48
  6. Step 6: Final answer
    x = 11,565.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.